Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6657412 | Pulse width modulation method, pulse width modulator and power converter | Keijiro Sakai, Toshiaki Okuyama, Hiroshi Fujii, Hiroyuki Tomita, Tatsuo Ando +2 more | 2003-12-02 |
| 6642689 | Control apparatus for power converter | Toshiaki Okuyama, Takashi Ogawa, Tetsuo Kojima, Kiyoshi Nakata | 2003-11-04 |
| 6611124 | Control apparatus of induction motor | — | 2003-08-26 |
| 6556460 | Method for controlling a vehicle provided with an electric power converter | Toshiaki Okuyama, Tetsuo Kojima, Kiyoshi Nakata, Akira Horie | 2003-04-29 |
| 6556464 | PWM converter system | Keijirou Sakai, Toshiaki Okuyama, Kinya Nakatsu, Hiroshi Fujii, Junji Kato +1 more | 2003-04-29 |